Mocking a Keycloak token for testing a Spring controller

Question

I want to write unit tests for my spring controller. I\'m using keycloak\'s openid flow to secure my endpoints.

In my tests I\'m using the @WithMockUser ann

Answer 1

I was able to test after adding the following things:

1. Add some fields:

   @Autowired
   private WebApplicationContext context;
   
   private MockMvc mockMvc;
   

2. In my @Before setup() method:

   mockMvc = MockMvcBuilders.webAppContextSetup(context)
      .alwaysDo(print())
      .apply(springSecurity())
      .build(); 
   

3. Inside my test method:

   SecurityContext context = SecurityContextHolder.getContext();
   Authentication authentication = context.getAuthentication();
   

When I pass the authentication object to the method where I read the claims from the keycloak token I can run the test without any problems.

P.S. Don't forget the @WithMockUser annotation